Hose coupling



P 24,1946- I J. G. VARTANIAN 2,408,243

' HOSE COUPLING r Filed June 21, 1944 2 SheerLs-Shget 1 Inventor 70! 5 L nem/vm/v,

P 24, 1945- .1. ca. VARTANIAN 7 2,408,243

HOSE cbUPLING Filed June 21, 1944 2 Sheets-Sheet 2 /7 j 2/ U- 6 r-d Q V I Inventor IE 1; By Wm Patented Sept. 24, 1946 .UNITEDTSTATES PATENT OFFICE HOSE COUPLING John G. Vartanian, Hanford, Calif.

and to prevent'the leakage of gas or liquid'that may-pass throughthe coupling. 2 I

Still another object of the invention is the provision of a coupling'of the character described that ismost economical to manufacture, that 7 can be manipulated without danger of slipping in the hands of 'the user during the coupling or uncoupling operation, and that is most highly serviceable in use and eflicient in operation.

Other objects and features of the invention will become apparent from the following description when considered in connection with the accompanying drawings, and the invention consists .in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the drawings and claimed.

In the drawings, wherein like reference char-v acters indicate corresponding parts throughout the several views: r V

Figure 1 is an elevational view of a hose coupling constructed in accordance with the present' invention. 7 J Figure 2 is an enlarged central longitudinal sectional view thereof.

Figure 3 is an end elevational view of the female coupling member per se, as seen looking toward the left of Figure 2.

Figure 4 is a fragmentary section taken substantially on the line 4-4 of Figure 3.

I Figure 5 is an end elevational view of the male coupling member perse, as seen looking toward the right of Figure 2.

Figure 6 is a fragmentary side elevational view of the male coupling member.

Figure 7 isa fragmentary section taken on line of Figure 6. T

Figure 8 is a section on line 8 -8 of Figure '7.

Figure 9 is a section on line 9-9 of Figure 7.

While the present invention is capable of general use, it has been found especially serviceable for coupling the air brake hose between a motor vehicle and a trailer towed by said vehicle.

Referring in detail to the drawings, the pres Application June 21, 1944, Serial No. 541,323

' 2 Claims. (015285-175) 2 I male member B adapted to be interlocked by a relative rotation of one with respect to the other.

The female coupling member A includes a pair of diametrically opposedsimilar curved jaws 5 and 6 formed on one end of a hose nipple I having a bore 8. A relatively deep annular groove 9 is formed in the end of the nipple 1 that carries the jaws 5 andfi, said groove being in concentric surrounding relation to the bore 8 and receiving a major end portion of an axially compressible resilient packing sleeve Ill. The jaws 5 and 6 have grooves H and Ila formed circumferentially of and in the inner'faces thereof so as to provide inwardly projecting arcuate flanges I2 and |2a at the outer sides of said grooves. As clearly indicated by dotted lines in Figure 3, the grooves II and Na open through opposite ends of thejaws 5 and 6 and terminate inshoulders l3 and |3a adjacent the other sides of said jaws 5 and 6. At the open ends of the grooves H and I la, the flanges. l2 and |2a are reduced in thickness at their inner sides, as at M, andare provided intermediate their ends with notches or recesses 5 in their inner sides, a projecting l4 and the notch or recess l5. 7 4,

The male coupling member B includes a solid cylindrical head I! externally formed on one end of a hose nipple l8, and a shallow annular groove I9 is formed in the end of nipple |8 that is provided with the head said groove l9 being in concentric surrounding relation to the bore 20 of nipple I8 and of the same diameter as the groove 9 of the female coupling member A. The groove l9 is thus adapted to receive the projecting end portion of the packing sleeve Ill. The head I! is formed at opposite sides with arcuate circumferentially extending ribs 2| that are formed intermediate their ends and on their outer sides with projecting lugs 22 of a'size to be received in th notches 5 in the flanges, l2 and |2a of the female coupling member A. Also, at one side of each'lug 22, each rib zl isfo'rmed with a recess 23 to receive the lug l6 of the associated flange l2 or 2a of the member A. Thus, when the head I! of the coupling member B is disposed between the jaws 5 and 6 with the ribs 2| disposed at opposite sides of the jaws 5 and 6, the male coupling member B may be forced toward the female coupling member Aso that V the packing sleeve 9 is received in the groove I9 and then compressed so as to allow the'ribs 2| to move into the grooves, and Na upon rotating th coupling member B ina clockwise direction relative to the member A as viewed in Figure 3. As soon as the ends of the ribs 2! abut the shoulders I3 and [3a, the coupling member B is released so as to allow the packing sleeve 9 to expand and cause engagement of lugs 22 in notches l5 and engagement of lugs 16 in notches 23. The compressed packing sleeve it} yieldingly urges the coupling members apart so as to keep the lugs l6 and 22 engaged in the notches 23 and I5 and thereby eifectively prevent disconnection of the coupling members unless they are forced toward each other so as to increase the compression of packing sleeve l and then given relative rotation to slide the ribs 2| out of the grooves ll and Ila. The packing sleeve Hi, being maintained under compression when the coupling members are coupled, insures an effective leak-proof joint between said coupling members. In order to more effectively seal the joint between the coupling members, they are provided centrally of and on the bottom of the grooves 9 and IS with annular ribs or beads 24 and 25 that engage the end edges of the packing sleeve I!) so as to expand the wall of said packing sleeve l0 tightly against opposite side walls of the grooves 9 and I9 at the bottoms of the latter. In order to more positively guard against any possible accidental separation of the coupling members, I provide a manually operable sliding lock 26 on the head I? of th coupling member B, and arranged to be slid toward the coupling member A to engage that side of jaw or jaw 5 opposite that through which the associated groove H or Ila extends. This will of course prevent rotation of coupling member B relative to coupling member A in the direction necessary for disconnection of the coupling'members, unless the locking element 26 is retracted from behind the side of the jaw 5 or 6. In the relationship shown, the locking member 26 is engaged behind the side of jawli, and it consists of an I-shaped member slidable in a slot 21 of head H and having one cross member engaged in an undercut groove 23 inwardly of and communicating with the slot 21, the outer cross member of the locking .element 26 being disposed outwardly of slot 21 in position to engage behind a side of the jaw 6, as shown in Figure 1. After the locking element 26 is inserted in slot 29. and groove 28, the ends of slot 26 and groove 28 are closed by means of a plug 29 inserted in said'slot and groove at the free end of head ll and suitably permanently secured in place. Thus, locking element 2B is mounted in head I? for limited sliding movement so that it may be moved to a looking position or a retracted or released position as respectively shown in Figures 1 and 7. At the same time, the block 29 prevents removal and loss of the locking element 26 with respect to head H.

The operation of the coupling having been explained during the description of the structure, it is believed that such operation, as well as the advantages of the invention, will be readily apparent to those skilled in the art.

As metallic coupling members have a tendency to slip in the hands, I propose to construct the members of the present coupling of a cellulose acetate composition or the like to overcome this annoyance and thereby enable the user to effectively grip the coupling members to bring about their ready relative movement for coupling or uncoupling the same. The coupling members may be cast from this composition, whereupon they are cleaned and ready for use without any machining of the members as required with metallic coupling members.

Minor changes in details of construction illus trated and described are contemplated, such as fall within the spirit and scope of the invention as claimed.

What I claim is:

1. A hose coupling comprising separable male and female coupling members, said female coupling member including a hose nipple having spaced diametrically opposed curved jaws integral with one end of the same said nipple being formed at said end with an annular groove concentric with and surrounding its bore, said jaws having circumferentially extending arcuate grooves in their inner faces that open through opposite sides of the respective jaws and termimate in shoulders inwardly of the other sides of said jaws, said grooves defining I inwardly extending arcuate flanges on the jaws at the outer sides of said grooves, said flanges having inwardly projecting lugs on and recesses in the inner sides thereof, said male coupling member including a second hose nipple externally enlarged at one end to provide a cylindrical head snugly receivable between the jaws of the female coupling member, said head being formed at its outer end with an annular groove registerable with the an nular groove of the nipple of the female coupling member, said head further being formed on opposite sides of its outer end portion with circumferentially extending arcuate ribs receivable in the grooves of said jaws and provided at their inner sides with inwardly projecting lugs and with recesses to respectively engage in the recesses of and to receive the lugs of said flanges upon relative separating movement of the coupling members when the ribs are engaged in said arcuate grooves, and a compressible packing sleeve having its opposite ends engaged in the annular grooves of the nipples and yieldingly acting to efiect said relative separating movement of the coupling members, the spaces between adjacent sides of said jaws being greater than the length of said arcuate ribs.

2. The construction defined in claim 1, incombination with a sliding locking member carried by said head of the male coupling member and engageable behind a side of one of the jaws of the female coupling member to positively prevent the relative rotation of the coupling members necessary for their uncoupling.

JOHN G. VARTANIAN. 

